| 基于萘酰亚胺-苯并咪唑鎓的荧光传感器对H2PO-4的高选择性识别 |
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| 引用本文： | 董智云,刘洋,王迎进,赵三虎,席福贵.基于萘酰亚胺-苯并咪唑鎓的荧光传感器对H2PO-4的高选择性识别[J].应用化学,2020,37(7):839-846. |
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| 作者姓名： | 董智云 刘洋 王迎进 赵三虎 席福贵 |
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| 作者单位： | 忻州师范学院化学系 山西 忻州 034000 |
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| 基金项目： | 国家自然科学基金(21701137)和山西省1331工程重点学科建设计划经费(2019)资助 |
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| 摘 要： | 设计合成了基于萘酰亚胺-咪唑鎓的受体分子1和2,通过荧光发射光谱研究了受体分子1和2对阴离子F-、Cl-、Br-、I-、AcO-、HSO-4、H2PO-4、NO-3、ClO-4的识别性能。 研究发现,在受体分子1和2的乙腈溶液(5.0×10-6 mol/L)中加入10倍化学计量的H2PO-4时,受体分子1的荧光猝灭率高达98%,受体分子2的荧光猝灭率仅为24%。 表明具有多重识别位点的受体分子1在构型上与H2PO-4更匹配,可作为H2PO-4的荧光关闭型(turn-off)探针。 受体分子1与H2PO-4的结合比为1∶1,结合常数为(1.25±0.11)×105 L/mol,检出限为6.90×10-6 mol/L。
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| 关 键 词： | 苯并咪唑鎓 萘酰亚胺 H2PO-4 荧光传感器 |
| 收稿时间： | 2020-01-02 |
Naphthalimide-Benzimidazolium Based Fluorescent Chemosensor for Highly Selective Recogniton of H2PO-4 |
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| DONG Zhiyun,LIU Yang,WANG Yingjin,ZHAO Sanhu,XI Fugui.Naphthalimide-Benzimidazolium Based Fluorescent Chemosensor for Highly Selective Recogniton of H2PO-4[J].Chinese Journal of Applied Chemistry,2020,37(7):839-846. |
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| Authors: | DONG Zhiyun LIU Yang WANG Yingjin ZHAO Sanhu XI Fugui |
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| Institution: | Department of Chemistry,Xinzhou Teachers University,Xinzhou,Shanxi 034000,China |
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| Abstract: | Two novel naphthalimide-benzimidazolium based receptors 1 and 2 were synthesized. The anion (F-, Cl-, Br-, I-, CH3COO-, HSO-4, H2PO-4, ClO-4, NO-3) binding properties of two receptors were evaluated in CH3CN by fluorescence spectroscopy. Two receptors display fluorescent quenching effect with H2PO-4 and the quench percentages for receptors 1 and 2 are 98%and 24%, respectively. The results indicate that receptor 1 is more closely matched to H2PO-4 in configuration, and receptor 1 behaves as a “turn-off” fluorescence sensor for H2PO-4. Job-plot shows that receptor 1 and H2PO-4 form a 1∶1 complex, and the binding constant is (1.25±0.11)×105 L/mol, the detection limit is 6.90×10-6 mol/L. |
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| Keywords: | benzimidazolium naphthalimide H2PO-4 fluorescent sensor |
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